Messages in this thread Patch in this message | | | From | Salil Mehta <> | Subject | [PATCH net-next 09/11] net: hns3: Change the dst mac addr of loopback packet | Date | Mon, 3 Sep 2018 11:21:54 +0100 |
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From: Yunsheng Lin <linyunsheng@huawei.com>
Currently, the dst mac addr of loopback packet is the same as the host' mac addr, the SSU component may loop back the packet to host before the packet reaches mac or serdes, which will defect the purpose of mac or serdes selftest.
This patch changes it by adding 0x1f to the last byte of dst mac addr.
Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com> Signed-off-by: Peng Li <lipeng321@huawei.com> Signed-off-by: Salil Mehta <salil.mehta@huawei.com> --- drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c b/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c index 7143e39..dfce76e 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c @@ -137,6 +137,7 @@ static void hns3_lp_setup_skb(struct sk_buff *skb) packet = skb_put(skb, HNS3_NIC_LB_TEST_PACKET_SIZE); memcpy(ethh->h_dest, ndev->dev_addr, ETH_ALEN); + ethh->h_dest[5] += 0x1f; eth_zero_addr(ethh->h_source); ethh->h_proto = htons(ETH_P_ARP); skb_reset_mac_header(skb); -- 2.7.4
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